Home / 827,028,064.80-1,240,542,097.20-639,774,828.45

Finding the Fourth Proportional to 827,028,064.80, 1,240,542,097.20 and 639,774,828.45

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Solution

The fourth proportional to 827,028,064.80, 1,240,542,097.20 and 639,774,828.45 is: 959,662,242.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,028,064.80 : 1,240,542,097.20 = 639,774,828.45 : x
  2. Step 2: Convert to fraction form
    827,028,064.80/1,240,542,097.20 = 639,774,828.45/x
  3. Step 3: Cross multiply
    827,028,064.80x = 1,240,542,097.20 × 639,774,828.45
  4. Step 4: Simplify right side
    827,028,064.80x = 793,667,607,421,133,312
  5. Step 5: Solve for x
    x = 793,667,607,421,133,312/827,028,064.80
  6. Step 6: Final answer
    x = 959,662,242.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.